Add, replace or upgrade SFP modules on Gigabit fiber equipment. The SFPGLCSXMMST Cisco® Compatible Gigabit Fiber SFP Transceiver Module MM LC - 550m (1804 ft) is built to comply with MSA (Multi-Sourcing Agreement) standards to offer a cost-effective way to add, replace or upgrade a Multimode LC port on your Gigabit fiber networking equipment or fiber media converter. Supporting data rates up to 1.25 Gbps, this LC Mini-GBIC module can be installed into any fiber networking device with an MSA or Cisco compliant SFP port. Delivering both convenience and scalability, this fiber transceiver is fully hot-pluggable, which enables you to install the module without interrupting network traffic or requiring a device reboot. This 850nm multi-mode SFP module is compatible with the Cisco GLC-SX-MM transceiver. Also a perfect accessory for the StarTech.com PEX1000SFP" text="PCI Express Open SFP NIC (PEX1000SFP), or ET1110PSE" text="Gigabit POE Open SFP Media Converter (ET1110PSE) products. Backed by a StarTech.com lifetime warranty and free lifetime technical support.